Cita APA

Trigger, B. G., & Trigger, B. G. (2007). Understanding early civilizations: A comparative study (1. edition.). Cambridge: Cambridge University Press.

Citación estilo Chicago

Trigger, Bruce G., y Bruce G. Trigger. Understanding Early Civilizations: A Comparative Study. 1. edition. Cambridge: Cambridge University Press, 2007.

Cita MLA

Trigger, Bruce G., y Bruce G. Trigger. Understanding Early Civilizations: A Comparative Study. 1. edition. Cambridge: Cambridge University Press, 2007.